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【320799】6.2.1异分母分数加、减法

时间:2025-01-08 18:46:14 作者: 字数:791字
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6.2.1异分母分数加、减法

一、填空。

  1  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

  2.  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

 二、判断。(对的画“√”,错的画“×

  1 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

  2 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

  3 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

三、计算。

 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

四、应用题。

食堂八月份烧煤6吨,九月份比八月份节约 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a> 吨,九月份烧煤多少吨?


















答案

一、 1 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

  2 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

二、 1× 2× 3×

三、1 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>   2 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  3 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>   4 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

  5 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>   6 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  7 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>

  四、 6 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  = <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  (吨)

答:九月份烧煤 <a href="/tags/52/" title="减法" class="c1" target="_blank">减法</a> <a href="/tags/144/" title="分数" class="c1" target="_blank">分数</a> <a href="/tags/407/" title="分母" class="c1" target="_blank">分母</a>  吨.


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